[esp-r] shading mulptiple zones?

[gyelt at ergoarte.ch]

Hi,

I'm new to esr and somewhat stuck with creating shading. I read the
cookbook, scanned the mail archive and did the exercises. Still, I have
two questions:

I'm trying to model a house (4 zones) that has high mountains around it
(20-40 degrees elevation).

1. How do I make the shading work for all zones? It seems to be defined
seperately for every zone? Is there a way to have each zonefile refer to
a central shading file?

2. Do the walls of one zone automatically cause shading for another zone
in the same model or should I define shading of adjacent zones by hand?

Thanks in advance for you help.

Sincerely

Gyelt Tuinstra